CPOA - Cours 6 (Suite Design Pattern)

public interface Canard {
  public void cancaner();
  public void voler();
}

public class Colvert implements Canard {
  public void cancaner() {
    System.out.println("Coincoin");
  }
  public void voler() {
    System.out.println("Je vole");
  }
}

public interface Dindon {
  public void glouglouter();
  public void voler();
}

public class DindonSauvage implements Dindon {
  public void glouglouter() {
    System.out.println("Glouglou");
  }
  public void voler() {
    System.out.println("Je ne vole pas loin");
  }
}

public class AdaptateurDindon implements Canard {
  Dindon dindon;

  ...

  public void cancaner() {
    dindon.glouglouter();
  }

  public void voler() {
    // Adaptation du vol
    for(int i=0; i < 5; i++) {
      dindon.voler();
    }
  }
}

public interface ItemElement {

  public int accept(ShoppingCartVisitor visitor);
}

public class Book implements ItemElement {

  private int price;
  private String isbnNumber;

  public Book(int cost, String isbn){
    this.price=cost;
    this.isbnNumber=isbn;
  }

  public int getPrice() {
    return price;
  }

  public String getIsbnNumber() {
    return isbnNumber;
  }

  @Override
  public int accept(ShoppingCartVisitor visitor) {
    return visitor.visit(this);
  }

}

public class Fruit implements ItemElement {

  private int pricePerKg;
  private int weight;
  private String name;

  public Fruit(int priceKg, int wt, String nm){
    this.pricePerKg=priceKg;
    this.weight=wt;
    this.name = nm;
  }

  public int getPricePerKg() {
    return pricePerKg;
  }

  public int getWeight() {
    return weight;
  }

  public String getName(){
    return this.name;
  }

  @Override
  public int accept(ShoppingCartVisitor visitor) {
    return visitor.visit(this);
  }
}

public interface ShoppingCartVisitor {

  int visit(Book book);
  int visit(Fruit fruit);
}

public class ShoppingCartVisitorImpl implements ShoppingCartVisitor {

  @Override
  public int visit(Book book) {
    int cost=0;
    //apply 5$ discount if book price is greater than 50
    if(book.getPrice() > 50){
      cost = book.getPrice()-5;
    } else cost = book.getPrice();
    System.out.println("Book ISBN::"+book.getIsbnNumber() + " cost ="+cost);
    return cost;
  }

  @Override
  public int visit(Fruit fruit) {
    int cost = fruit.getPricePerKg()*fruit.getWeight();
    System.out.println(fruit.getName() + " cost = "+cost);
    return cost;
  }
}

public class ShoppingCartClient {

  public static void main(String[] args) {
    ItemElement[] items = new ItemElement[]{new Book(20, "1234"),new Book(100, "5678"),
    new Fruit(10, 2, "Banana"), new Fruit(5, 5, "Apple")};

    int total = calculatePrice(items);
    System.out.println("Total Cost = "+total);
  }

  private static int calculatePrice(ItemElement[] items) {
    ShoppingCartVisitor visitor = new ShoppingCartVisitorImpl();
    int sum=0;
    for(ItemElement item : items){
      sum = sum + item.accept(visitor);
    }
    return sum;
  }

}

import java.rmi.*;
public interface MonService extends Remote {
  public String direBonjour() throws RemoteException;
}

import java.rmi.*;
import java.rmi.server.*;

public class MonServiceImpl extends UnicastRemoteObject implements MonService {
  public String direBonjour() {
    return "Le serveur dit 'Bonjour'";
  }
  public MonServiceImpl() throws RemoteException {}
  public static void main (String[] args) {
    try {
      MonService service = new MonServiceImpl();
      Naming.rebind("BonjourDistant", service);
    } catch(Exception ex) {
      ex.printStackTrace();
    }
  }
}

MonService service =
  (MonService) Naming.lookup("rmi://127.0.0.1/BonjourDistant");
...
service.direBonjour();

# Saluer tout le monde
def say_hi
  if @names.nil?
    puts "..."
  elsif @names.respond_to?("each")
    # @names est une liste de noms : traitons-les uns par uns
    @names.each do |name|
      puts "Hello #{name}!"
    end
  else
    puts "Hello #{@names}!"
  end
end

import java.util.ArrayList;

interface Graphic {
    public void print();
}

class CompositeGraphic implements Graphic {

  private ArrayList<Graphic> mChildGraphics = new ArrayList<Graphic>();

  public void print() {
    for (Graphic graphic : mChildGraphics) {
      graphic.print();
    }
  }

  public void add(Graphic graphic) {
    mChildGraphics.add(graphic);
  }

  public void remove(Graphic graphic) {
    mChildGraphics.remove(graphic);
  }
}

continuer = true;
while (continuer) {
  AAB.afficherMenu(monAg);
  choix = lect.next();
  choix = choix.toLowerCase();
  switch (choix) {
    ...
    case "p" :
      System.out.print("Propriétaire -> ");
      nom = lect.next();
      AAB.comptesDUnPropretaire (monAg, nom);
    break;
    ...

public interface ActionList extends Action {

  public String listTitle();
  public int size();

  public boolean addAction(Action ac);
  public boolean removeAction(Action ac);

  public String[] listOfActions() ;

}

public interface Action  {

  public String actionMessage ();
  public void execute(AgenceBancaire ag);
}

public class Action1 implements Action {

  private String lineMessage;

  ...
  public String actionMessage() {
    return this.lineMessage;
  }

  public void execute(AgenceBancaire ab) {

    ...
    ab.afficher();
  }
}

  action.execute(ab);

Action a1 = new Action1("Liste des comptes de l'agence");
Action a2 = new Action2("Voir un compte (par son numéro)");
Action a3 = new Action3(...);

ActionList al1 = new ActionListAgenceBancaire("Menu Général");

al1.addAction(a1);
al1.addAction(a2);

public void execute(AgenceBancaire ab) throws Exception {
  ...
  while (true) {
    this.printMenu();

    choice = this.readResponse();
    ...
    this.myMenu.get(choice).execute(ab);
    ...

public interface ActionList extends Action {
}